lustre/llite/namei.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #include <linux/fs.h>
  38 #include <linux/sched.h>
  39 #include <linux/mm.h>
  40 #include <linux/smp_lock.h>
  41 #include <linux/quotaops.h>
  42 #include <linux/highmem.h>
  43 #include <linux/pagemap.h>
  44
  45 #define DEBUG_SUBSYSTEM S_LLITE
  46
  47 #include <obd_support.h>
  48 #include <lustre_lite.h>
  49 #include <lustre_dlm.h>
  50 #include <linux/lustre_version.h>
  51 #include "llite_internal.h"
  52
  53 /* methods */
  54
  55 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
  56 {
  57         ENTRY;
  58
  59         ldlm_lock_decref(lockh, mode);
  60
  61         RETURN(0);
  62 }
  63
  64 /* Get an inode by inode number (already instantiated by the intent lookup).
  65  * Returns inode or NULL
  66  */
  67
  68 static inline __u64 fid_flatten(const struct lu_fid *fid)
  69 {
  70         return (fid_seq(fid) - 1) * LUSTRE_SEQ_MAX_WIDTH + fid_oid(fid);
  71 }
  72 /* Build inode number on passed @fid */
  73 ino_t ll_fid_build_ino(struct ll_sb_info *sbi,
  74                        struct ll_fid *fid)
  75 {
  76         ino_t ino;
  77         ENTRY;
  78
  79         if (fid_is_igif((struct lu_fid*)fid)) {
  80                 ino = lu_igif_ino((struct lu_fid*)fid);
  81                 RETURN(ino);
  82         }
  83
  84         /*
  85          * Very stupid and having many downsides inode allocation algorithm
  86          * based on fid.
  87          */
  88         ino = fid_flatten((struct lu_fid*)fid) & 0xFFFFFFFF;
  89
  90         if (unlikely(ino == 0))
  91                 /* the first result ino is 0xFFC001, so this is rarely used */
  92                 ino = 0xffbcde;
  93         ino = ino | 0x80000000;
  94         RETURN(ino);
  95
  96 }
  97
  98 __u32 ll_fid_build_gen(struct ll_sb_info *sbi, struct ll_fid *fid)
  99 {
 100         __u32 gen = 0;
 101         ENTRY;
 102
 103         if (fid_is_igif((struct lu_fid*)fid)) {
 104                 gen = lu_igif_gen((struct lu_fid*)fid);
 105         }
 106         RETURN(gen);
 107 }
 108
 109 /* called from iget5_locked->find_inode() under inode_lock spinlock */
 110 static int fid_test_inode(struct inode *inode, void *opaque)
 111 {
 112         struct lustre_md     *md = opaque;
 113         struct lu_fid        *fid = (struct lu_fid*)&md->body->fid1;
 114
 115         if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
 116                 CERROR("MDS body missing FID\n");
 117                 return 0;
 118         }
 119
 120         return fid_seq(ll_inode_lu_fid(inode)) == fid_seq(fid) &&
 121                fid_oid(ll_inode_lu_fid(inode)) == fid_oid(fid);
 122 }
 123
 124 static int fid_set_inode(struct inode *inode, void *opaque)
 125 {
 126         struct lustre_md     *md  = opaque;
 127
 128         *ll_inode_lu_fid(inode) = *((struct lu_fid*)&md->body->fid1);
 129         return 0;
 130 }
 131
 132 struct inode *ll_iget(struct super_block *sb, ino_t hash,
 133                           struct lustre_md *md)
 134 {
 135         struct inode         *inode;
 136         ENTRY;
 137
 138         LASSERT(hash != 0);
 139         inode = iget5_locked(sb, hash, fid_test_inode, fid_set_inode, md);
 140
 141         if (inode) {
 142                 if (inode->i_state & I_NEW) {
 143                         ll_read_inode2(inode, md);
 144                         unlock_new_inode(inode);
 145                 } else {
 146                         if (!(inode->i_state & (I_FREEING | I_CLEAR)))
 147                                 ll_update_inode(inode, md);
 148                 }
 149                 CDEBUG(D_VFSTRACE, "got inode: %lu/%u(%p) for "DFID"\n",
 150                        inode->i_ino, inode->i_generation, inode,
 151                        PFID(ll_inode_lu_fid(inode)));
 152         }
 153
 154         RETURN(inode);
 155 }
 156
 157 static void ll_drop_negative_dentry(struct inode *dir)
 158 {
 159         struct dentry *dentry, *tmp_alias, *tmp_subdir;
 160
 161         spin_lock(&ll_lookup_lock);
 162         spin_lock(&dcache_lock);
 163 restart:
 164         list_for_each_entry_safe(dentry, tmp_alias,
 165                                  &dir->i_dentry,d_alias) {
 166                 if (!list_empty(&dentry->d_subdirs)) {
 167                         struct dentry *child;
 168                         list_for_each_entry_safe(child, tmp_subdir,
 169                                                  &dentry->d_subdirs,
 170                                                  d_child) {
 171                                 /* XXX Print some debug here? */
 172                                 if (!child->d_inode)
 173                                 /* Negative dentry. If we were
 174                                    dropping dcache lock, go
 175                                    throught the list again */
 176                                         if (ll_drop_dentry(child))
 177                                                 goto restart;
 178                         }
 179                 }
 180         }
 181         spin_unlock(&dcache_lock);
 182         spin_unlock(&ll_lookup_lock);
 183 }
 184
 185 int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 186                         void *data, int flag)
 187 {
 188         int rc;
 189         struct lustre_handle lockh;
 190         ENTRY;
 191
 192         switch (flag) {
 193         case LDLM_CB_BLOCKING:
 194                 ldlm_lock2handle(lock, &lockh);
 195                 rc = ldlm_cli_cancel(&lockh);
 196                 if (rc < 0) {
 197                         CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
 198                         RETURN(rc);
 199                 }
 200                 break;
 201         case LDLM_CB_CANCELING: {
 202                 struct inode *inode = ll_inode_from_lock(lock);
 203                 __u64 bits = lock->l_policy_data.l_inodebits.bits;
 204                 struct lu_fid *fid;
 205
 206                 /* Invalidate all dentries associated with this inode */
 207                 if (inode == NULL)
 208                         break;
 209
 210                 fid = ll_inode_lu_fid(inode);;
 211
 212                 LASSERT(lock->l_flags & LDLM_FL_CANCELING);
 213                 if ((bits & MDS_INODELOCK_LOOKUP) &&
 214                     ll_have_md_lock(inode, MDS_INODELOCK_LOOKUP))
 215                         bits &= ~MDS_INODELOCK_LOOKUP;
 216                 if ((bits & MDS_INODELOCK_UPDATE) &&
 217                     ll_have_md_lock(inode, MDS_INODELOCK_UPDATE))
 218                         bits &= ~MDS_INODELOCK_UPDATE;
 219                 if ((bits & MDS_INODELOCK_OPEN) &&
 220                     ll_have_md_lock(inode, MDS_INODELOCK_OPEN))
 221                         bits &= ~MDS_INODELOCK_OPEN;
 222
 223                 if (!fid_res_name_eq(fid, &lock->l_resource->lr_name)) {
 224                         LDLM_ERROR(lock, "data mismatch with ino %lu/%u (%p)",
 225                                    inode->i_ino, inode->i_generation, inode);
 226                 }
 227
 228                 if (bits & MDS_INODELOCK_OPEN) {
 229                         int flags = 0;
 230                         switch (lock->l_req_mode) {
 231                         case LCK_CW:
 232                                 flags = FMODE_WRITE;
 233                                 break;
 234                         case LCK_PR:
 235                                 flags = FMODE_EXEC;
 236                                 if (!FMODE_EXEC)
 237                                         CERROR("open PR lock without FMODE_EXEC\n");
 238                                 break;
 239                         case LCK_CR:
 240                                 flags = FMODE_READ;
 241                                 break;
 242                         default:
 243                                 CERROR("Unexpected lock mode for OPEN lock "
 244                                        "%d, inode %ld\n", lock->l_req_mode,
 245                                        inode->i_ino);
 246                         }
 247                         ll_mdc_real_close(inode, flags);
 248                 }
 249
 250                 if (bits & MDS_INODELOCK_UPDATE)
 251                         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
 252                                   &(ll_i2info(inode)->lli_flags));
 253
 254                 if (S_ISDIR(inode->i_mode) &&
 255                      (bits & MDS_INODELOCK_UPDATE)) {
 256                         CDEBUG(D_INODE, "invalidating inode %lu\n",
 257                                inode->i_ino);
 258                         truncate_inode_pages(inode->i_mapping, 0);
 259                         ll_drop_negative_dentry(inode);
 260                         inode->i_version++; /* XXX: remove with inode version*/
 261                 }
 262
 263                 if (inode->i_sb->s_root &&
 264                     inode != inode->i_sb->s_root->d_inode &&
 265                     (bits & MDS_INODELOCK_LOOKUP))
 266                         ll_unhash_aliases(inode);
 267                 iput(inode);
 268                 break;
 269         }
 270         default:
 271                 LBUG();
 272         }
 273
 274         RETURN(0);
 275 }
 276
 277 int ll_mdc_cancel_unused(struct lustre_handle *conn, struct inode *inode,
 278                          int flags, void *opaque)
 279 {
 280         struct ldlm_res_id res_id;
 281         struct obd_device *obddev = class_conn2obd(conn);
 282         ENTRY;
 283
 284         fid_build_reg_res_name(ll_inode_lu_fid(inode), &res_id);
 285         RETURN(ldlm_cli_cancel_unused(obddev->obd_namespace, &res_id, flags,
 286                                       opaque));
 287 }
 288
 289 /* Pack the required supplementary groups into the supplied groups array.
 290  * If we don't need to use the groups from the target inode(s) then we
 291  * instead pack one or more groups from the user's supplementary group
 292  * array in case it might be useful.  Not needed if doing an MDS-side upcall. */
 293 void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
 294 {
 295         int i;
 296
 297         LASSERT(i1 != NULL);
 298         LASSERT(suppgids != NULL);
 299
 300         if (in_group_p(i1->i_gid))
 301                 suppgids[0] = i1->i_gid;
 302         else
 303                 suppgids[0] = -1;
 304
 305         if (i2) {
 306                 if (in_group_p(i2->i_gid))
 307                         suppgids[1] = i2->i_gid;
 308                 else
 309                         suppgids[1] = -1;
 310         } else {
 311                 suppgids[1] = -1;
 312         }
 313
 314         for (i = 0; i < current_ngroups; i++) {
 315                 if (suppgids[0] == -1) {
 316                         if (current_groups[i] != suppgids[1])
 317                                 suppgids[0] = current_groups[i];
 318                         continue;
 319                 }
 320                 if (suppgids[1] == -1) {
 321                         if (current_groups[i] != suppgids[0])
 322                                 suppgids[1] = current_groups[i];
 323                         continue;
 324                 }
 325                 break;
 326         }
 327 }
 328
 329 int ll_prepare_mdc_op_data(struct mdc_op_data *op_data, struct inode *i1,
 330                             struct inode *i2, const char *name, int namelen,
 331                             int mode, void *data)
 332 {
 333         LASSERT(i1);
 334
 335         if (namelen > ll_i2sbi(i1)->ll_namelen)
 336                 return -ENAMETOOLONG;
 337         ll_i2gids(op_data->suppgids, i1, i2);
 338         ll_inode2fid(&op_data->fid1, i1);
 339
 340         if (i2)
 341                 ll_inode2fid(&op_data->fid2, i2);
 342         else
 343                 memset(&op_data->fid2, 0, sizeof(op_data->fid2));
 344
 345         op_data->name = name;
 346         op_data->namelen = namelen;
 347         op_data->create_mode = mode;
 348         op_data->mod_time = CURRENT_SECONDS;
 349         op_data->data = data;
 350
 351         return 0;
 352 }
 353
 354 static void ll_d_add(struct dentry *de, struct inode *inode)
 355 {
 356         CDEBUG(D_DENTRY, "adding inode %p to dentry %p\n", inode, de);
 357         /* d_instantiate */
 358         if (!list_empty(&de->d_alias)) {
 359                 spin_unlock(&dcache_lock);
 360                 CERROR("dentry %.*s %p alias next %p, prev %p\n",
 361                        de->d_name.len, de->d_name.name, de,
 362                        de->d_alias.next, de->d_alias.prev);
 363                 LBUG();
 364         }
 365         if (inode)
 366                 list_add(&de->d_alias, &inode->i_dentry);
 367         de->d_inode = inode;
 368
 369         /* d_rehash */
 370         if (!d_unhashed(de)) {
 371                 spin_unlock(&dcache_lock);
 372                 CERROR("dentry %.*s %p hash next %p\n",
 373                        de->d_name.len, de->d_name.name, de, de->d_hash.next);
 374                 LBUG();
 375         }
 376         d_rehash_cond(de, 0);
 377 }
 378
 379 /* Search "inode"'s alias list for a dentry that has the same name and parent
 380  * as de.  If found, return it.  If not found, return de.
 381  * Lustre can't use d_add_unique because don't unhash aliases for directory
 382  * in ll_revalidate_it.  After revaliadate inode will be have hashed aliases
 383  * and it triggers BUG_ON in d_instantiate_unique (bug #10954).
 384  */
 385 static struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
 386 {
 387         struct list_head *tmp;
 388         struct dentry *dentry;
 389         struct dentry *last_discon = NULL;
 390
 391         spin_lock(&ll_lookup_lock);
 392         spin_lock(&dcache_lock);
 393         list_for_each(tmp, &inode->i_dentry) {
 394                 dentry = list_entry(tmp, struct dentry, d_alias);
 395
 396                 /* We are called here with 'de' already on the aliases list. */
 397                 if (unlikely(dentry == de)) {
 398                         CERROR("whoops\n");
 399                         continue;
 400                 }
 401
 402                 if (dentry->d_flags & DCACHE_DISCONNECTED) {
 403                         /* LASSERT(last_discon == NULL); see bug 20055 */
 404                         last_discon = dentry;
 405                         continue;
 406                 }
 407
 408                 if (dentry->d_parent != de->d_parent)
 409                         continue;
 410
 411                 if (dentry->d_name.hash != de->d_name.hash)
 412                         continue;
 413
 414                 if (dentry->d_name.len != de->d_name.len)
 415                         continue;
 416
 417                 if (memcmp(dentry->d_name.name, de->d_name.name,
 418                            de->d_name.len) != 0)
 419                         continue;
 420
 421                 dget_locked(dentry);
 422                 lock_dentry(dentry);
 423                 __d_drop(dentry);
 424                 unlock_dentry(dentry);
 425                 ll_dops_init(dentry, 0);
 426                 d_rehash_cond(dentry, 0); /* avoid taking dcache_lock inside */
 427                 spin_unlock(&dcache_lock);
 428                 spin_unlock(&ll_lookup_lock);
 429                 iput(inode);
 430                 CDEBUG(D_DENTRY, "alias dentry %.*s (%p) parent %p inode %p "
 431                        "refc %d\n", de->d_name.len, de->d_name.name, de,
 432                        de->d_parent, de->d_inode, atomic_read(&de->d_count));
 433                 return dentry;
 434         }
 435
 436         if (last_discon) {
 437                 CDEBUG(D_DENTRY, "Reuse disconnected dentry %p inode %p "
 438                         "refc %d\n", last_discon, last_discon->d_inode,
 439                         atomic_read(&last_discon->d_count));
 440                 dget_locked(last_discon);
 441                 last_discon->d_flags |= DCACHE_LUSTRE_INVALID;
 442                 spin_unlock(&dcache_lock);
 443                 spin_unlock(&ll_lookup_lock);
 444                 ll_dops_init(last_discon, 1);
 445                 d_rehash(de);
 446                 d_move(last_discon, de);
 447                 iput(inode);
 448                 return last_discon;
 449         }
 450
 451         de->d_flags |= DCACHE_LUSTRE_INVALID;
 452         ll_d_add(de, inode);
 453
 454         spin_unlock(&dcache_lock);
 455         spin_unlock(&ll_lookup_lock);
 456
 457         return de;
 458 }
 459
 460 int lookup_it_finish(struct ptlrpc_request *request, int offset,
 461                      struct lookup_intent *it, void *data)
 462 {
 463         struct it_cb_data *icbd = data;
 464         struct dentry **de = icbd->icbd_childp;
 465         struct inode *parent = icbd->icbd_parent;
 466         struct ll_sb_info *sbi = ll_i2sbi(parent);
 467         struct inode *inode = NULL;
 468         int rc;
 469         ENTRY;
 470
 471         /* NB 1 request reference will be taken away by ll_intent_lock()
 472          * when I return */
 473         if (!it_disposition(it, DISP_LOOKUP_NEG)) {
 474                 struct dentry *save = *de;
 475                 __u32 bits;
 476
 477                 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, offset,
 478                                    (*de)->d_sb);
 479                 if (rc)
 480                         RETURN(rc);
 481
 482                 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
 483                        inode, inode->i_ino, inode->i_generation);
 484                 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode, &bits);
 485
 486                 /* We used to query real size from OSTs here, but actually
 487                    this is not needed. For stat() calls size would be updated
 488                    from subsequent do_revalidate()->ll_inode_revalidate_it() in
 489                    2.4 and
 490                    vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
 491                    Everybody else who needs correct file size would call
 492                    ll_glimpse_size or some equivalent themselves anyway.
 493                    Also see bug 7198. */
 494
 495                 ll_dops_init(*de, 1);
 496                 *de = ll_find_alias(inode, *de);
 497                 if (*de != save) {
 498                         struct ll_dentry_data *lld = ll_d2d(*de);
 499
 500                         /* just make sure the ll_dentry_data is ready */
 501                         if (unlikely(lld == NULL)) {
 502                                 ll_set_dd(*de);
 503                                 lld = ll_d2d(*de);
 504                                 if (likely(lld != NULL))
 505                                         lld->lld_sa_generation = 0;
 506                         }
 507                 }
 508                 /* we have lookup look - unhide dentry */
 509                 if (bits & MDS_INODELOCK_LOOKUP) {
 510                         lock_dentry(*de);
 511                         (*de)->d_flags &= ~(DCACHE_LUSTRE_INVALID);
 512                         unlock_dentry(*de);
 513                 }
 514         } else {
 515                 ll_dops_init(*de, 1);
 516                 /* Check that parent has UPDATE lock. If there is none, we
 517                    cannot afford to hash this dentry (done by ll_d_add) as it
 518                    might get picked up later when UPDATE lock will appear */
 519                 if (ll_have_md_lock(parent, MDS_INODELOCK_UPDATE)) {
 520                         spin_lock(&dcache_lock);
 521                         ll_d_add(*de, inode);
 522                         spin_unlock(&dcache_lock);
 523                 } else {
 524                         /* negative lookup - and don't have update lock to
 525                          * parent */
 526                         lock_dentry(*de);
 527                         (*de)->d_flags |= DCACHE_LUSTRE_INVALID;
 528                         unlock_dentry(*de);
 529
 530                         (*de)->d_inode = NULL;
 531                         /* We do not want to hash the dentry if don`t have a
 532                          * lock, but if this dentry is later used in d_move,
 533                          * we'd hit uninitialised list head d_hash, so we just
 534                          * do this to init d_hash field but leave dentry
 535                          * unhashed. (bug 10796). */
 536                         d_rehash(*de);
 537                         d_drop(*de);
 538                 }
 539         }
 540
 541         RETURN(0);
 542 }
 543
 544 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 545                                    struct lookup_intent *it, int lookup_flags)
 546 {
 547         struct dentry *save = dentry, *retval;
 548         struct mdc_op_data op_data = { { 0 } };
 549         struct it_cb_data icbd;
 550         struct ptlrpc_request *req = NULL;
 551         struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
 552         int rc, first = 0;
 553         ENTRY;
 554
 555         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 556                dentry->d_name.len, dentry->d_name.name, parent->i_ino,
 557                parent->i_generation, parent, LL_IT2STR(it));
 558
 559         if (d_mountpoint(dentry))
 560                 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
 561
 562         ll_frob_intent(&it, &lookup_it);
 563
 564         /* As do_lookup is called before follow_mount, root dentry may be left
 565          * not valid, revalidate it here. */
 566         if (parent->i_sb->s_root && (parent->i_sb->s_root->d_inode == parent) &&
 567             (it->it_op & (IT_OPEN | IT_CREAT))) {
 568                 rc = ll_inode_revalidate_it(parent->i_sb->s_root, it);
 569                 if (rc)
 570                         RETURN(ERR_PTR(rc));
 571         }
 572
 573         if (it->it_op == IT_GETATTR) {
 574                 first = ll_statahead_enter(parent, &dentry, 1);
 575                 if (first >= 0) {
 576                         ll_statahead_exit(parent, dentry, first);
 577                         if (first == 1)
 578                                 RETURN(retval = dentry);
 579                 }
 580         }
 581
 582         icbd.icbd_parent = parent;
 583         icbd.icbd_childp = &dentry;
 584
 585         rc = ll_prepare_mdc_op_data(&op_data, parent, NULL, dentry->d_name.name,
 586                                     dentry->d_name.len, lookup_flags, NULL);
 587         if (rc)
 588                 RETURN(ERR_PTR(rc));
 589
 590         it->it_create_mode &= ~current->fs->umask;
 591
 592         rc = mdc_intent_lock(ll_i2mdcexp(parent), &op_data, NULL, 0, it,
 593                              lookup_flags, &req, ll_mdc_blocking_ast, 0);
 594
 595         if (rc < 0)
 596                 GOTO(out, retval = ERR_PTR(rc));
 597
 598         rc = lookup_it_finish(req, DLM_REPLY_REC_OFF, it, &icbd);
 599         if (rc != 0) {
 600                 ll_intent_release(it);
 601                 GOTO(out, retval = ERR_PTR(rc));
 602         }
 603
 604         if (first == -EEXIST)
 605                 ll_statahead_mark(parent, dentry);
 606
 607         if ((it->it_op & IT_OPEN) && dentry->d_inode &&
 608             !S_ISREG(dentry->d_inode->i_mode) &&
 609             !S_ISDIR(dentry->d_inode->i_mode)) {
 610                 ll_release_openhandle(dentry, it);
 611         }
 612         ll_lookup_finish_locks(it, dentry);
 613
 614         if (dentry == save)
 615                 GOTO(out, retval = NULL);
 616         else
 617                 GOTO(out, retval = dentry);
 618  out:
 619         if (req)
 620                 ptlrpc_req_finished(req);
 621         return retval;
 622 }
 623
 624 #ifdef HAVE_VFS_INTENT_PATCHES
 625 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 626                                    struct nameidata *nd)
 627 {
 628         struct dentry *de;
 629         ENTRY;
 630
 631         if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
 632                 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
 633         else
 634                 de = ll_lookup_it(parent, dentry, NULL, 0);
 635
 636         RETURN(de);
 637 }
 638 #else
 639 struct lookup_intent *ll_convert_intent(struct open_intent *oit,
 640                                         int lookup_flags)
 641 {
 642         struct lookup_intent *it;
 643
 644         OBD_ALLOC(it, sizeof(*it));
 645         if (!it)
 646                 return ERR_PTR(-ENOMEM);
 647
 648         if (lookup_flags & LOOKUP_OPEN) {
 649                 it->it_op = IT_OPEN;
 650                 if (lookup_flags & LOOKUP_CREATE)
 651                         it->it_op |= IT_CREAT;
 652                 it->it_create_mode = oit->create_mode;
 653                 it->it_flags = oit->flags;
 654         } else {
 655                 it->it_op = IT_GETATTR;
 656         }
 657
 658 #ifndef HAVE_FILE_IN_STRUCT_INTENT
 659                 /* Since there is no way to pass our intent to ll_file_open,
 660                  * just check the file is there. Actual open will be done
 661                  * in ll_file_open */
 662                 if (it->it_op & IT_OPEN)
 663                         it->it_op = IT_LOOKUP;
 664 #endif
 665
 666         return it;
 667 }
 668
 669 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
 670                                    struct nameidata *nd)
 671 {
 672         struct dentry *de;
 673         ENTRY;
 674
 675         if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
 676                 struct lookup_intent *it;
 677
 678 #if defined(HAVE_FILE_IN_STRUCT_INTENT) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 679                 /* Did we came here from failed revalidate just to propagate
 680                  * its error? */
 681                 if (nd->flags & LOOKUP_OPEN)
 682                         if (IS_ERR(nd->intent.open.file))
 683                                 RETURN((struct dentry *)nd->intent.open.file);
 684 #endif
 685
 686                 if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
 687                         it = ll_d2d(dentry)->lld_it;
 688                         ll_d2d(dentry)->lld_it = NULL;
 689                 } else {
 690                         if ((nd->flags & LOOKUP_CREATE ) && !(nd->flags & LOOKUP_OPEN)) {
 691                                 /* We are sure this is new dentry, so we need to create
 692                                    our private data and set the dentry ops */
 693                                 ll_dops_init(dentry, 1);
 694                                 RETURN(NULL);
 695                         }
 696                         it = ll_convert_intent(&nd->intent.open, nd->flags);
 697                         if (IS_ERR(it))
 698                                 RETURN((struct dentry *)it);
 699                 }
 700
 701                 de = ll_lookup_it(parent, dentry, it, nd->flags);
 702                 if (de)
 703                         dentry = de;
 704                 if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
 705                         if (dentry->d_inode &&
 706                             it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
 707 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 708                                 if (S_ISFIFO(dentry->d_inode->i_mode)) {
 709                                         // We cannot call open here as it would
 710                                         // deadlock.
 711                                         ptlrpc_req_finished(
 712                                                        (struct ptlrpc_request *)
 713                                                           it->d.lustre.it_data);
 714                                 } else {
 715 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
 716 /* 2.6.1[456] have a bug in open_namei() that forgets to check
 717  * nd->intent.open.file for error, so we need to return it as lookup's result
 718  * instead */
 719                                         struct file *filp;
 720                                         nd->intent.open.file->private_data = it;
 721                                         filp =lookup_instantiate_filp(nd,dentry,
 722                                                                       NULL);
 723                                         if (IS_ERR(filp)) {
 724                                                 if (de)
 725                                                         dput(de);
 726                                                 de = (struct dentry *) filp;
 727                                         }
 728 #else
 729                                         nd->intent.open.file->private_data = it;
 730                                         (void)lookup_instantiate_filp(nd,dentry,
 731                                                                       NULL);
 732 #endif
 733
 734                                 }
 735 #else /* HAVE_FILE_IN_STRUCT_INTENT */
 736                                 /* Release open handle as we have no way to
 737                                  * pass it to ll_file_open */
 738                                 ll_release_openhandle(dentry, it);
 739 #endif /* HAVE_FILE_IN_STRUCT_INTENT */
 740                         } else if (it_disposition(it, DISP_OPEN_CREATE)) {
 741                                 // XXX This can only reliably work on assumption
 742                                 // that there are NO hashed negative dentries.
 743                                 ll_d2d(dentry)->lld_it = it;
 744                                 it = NULL; /* Will be freed in ll_create_nd */
 745                                 /* We absolutely depend on ll_create_nd to be
 746                                  * called to not leak this intent and possible
 747                                  * data attached to it */
 748                         }
 749                 }
 750
 751                 if (it) {
 752                         ll_intent_release(it);
 753                         OBD_FREE(it, sizeof(*it));
 754                 }
 755         } else {
 756                 de = ll_lookup_it(parent, dentry, NULL, 0);
 757         }
 758
 759         RETURN(de);
 760 }
 761 #endif
 762
 763 /* We depend on "mode" being set with the proper file type/umask by now */
 764 static struct inode *ll_create_node(struct inode *dir, const char *name,
 765                                     int namelen, const void *data, int datalen,
 766                                     int mode, __u64 extra,
 767                                     struct lookup_intent *it)
 768 {
 769         struct inode *inode = NULL;
 770         struct ptlrpc_request *request = NULL;
 771         struct ll_sb_info *sbi = ll_i2sbi(dir);
 772         int rc;
 773         ENTRY;
 774
 775         LASSERT(it && it->d.lustre.it_disposition);
 776
 777         LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
 778         request = it->d.lustre.it_data;
 779         it_clear_disposition(it, DISP_ENQ_CREATE_REF);
 780         rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, DLM_REPLY_REC_OFF,
 781                            dir->i_sb);
 782         if (rc)
 783                 GOTO(out, inode = ERR_PTR(rc));
 784
 785         LASSERT(list_empty(&inode->i_dentry));
 786
 787         /* We asked for a lock on the directory, but were granted a
 788          * lock on the inode.  Since we finally have an inode pointer,
 789          * stuff it in the lock. */
 790         CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
 791                inode, inode->i_ino, inode->i_generation);
 792         mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode, NULL);
 793         EXIT;
 794  out:
 795         ptlrpc_req_finished(request);
 796         return inode;
 797 }
 798
 799 /*
 800  * By the time this is called, we already have created the directory cache
 801  * entry for the new file, but it is so far negative - it has no inode.
 802  *
 803  * We defer creating the OBD object(s) until open, to keep the intent and
 804  * non-intent code paths similar, and also because we do not have the MDS
 805  * inode number before calling ll_create_node() (which is needed for LOV),
 806  * so we would need to do yet another RPC to the MDS to store the LOV EA
 807  * data on the MDS.  If needed, we would pass the PACKED lmm as data and
 808  * lmm_size in datalen (the MDS still has code which will handle that).
 809  *
 810  * If the create succeeds, we fill in the inode information
 811  * with d_instantiate().
 812  */
 813 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
 814                         struct lookup_intent *it)
 815 {
 816         struct inode *inode;
 817         struct ptlrpc_request *request = it->d.lustre.it_data;
 818         int rc = 0;
 819         ENTRY;
 820
 821         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),intent=%s\n",
 822                dentry->d_name.len, dentry->d_name.name, dir->i_ino,
 823                dir->i_generation, dir, LL_IT2STR(it));
 824
 825         rc = it_open_error(DISP_OPEN_CREATE, it);
 826         if (rc)
 827                 RETURN(rc);
 828
 829         mdc_store_inode_generation(request, DLM_INTENT_REC_OFF,
 830                                    DLM_REPLY_REC_OFF);
 831         inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
 832                                NULL, 0, mode, 0, it);
 833         if (IS_ERR(inode)) {
 834                 RETURN(PTR_ERR(inode));
 835         }
 836
 837         d_instantiate(dentry, inode);
 838         /* Negative dentry may be unhashed if parent does not have UPDATE lock,
 839          * but some callers, e.g. do_coredump, expect dentry to be hashed after
 840          * successful create. Hash it here. */
 841         spin_lock(&dcache_lock);
 842         if (d_unhashed(dentry))
 843                 d_rehash_cond(dentry, 0);
 844         spin_unlock(&dcache_lock);
 845         RETURN(0);
 846 }
 847
 848 static void ll_update_times(struct ptlrpc_request *request, int offset,
 849                             struct inode *inode)
 850 {
 851         struct mds_body *body = lustre_msg_buf(request->rq_repmsg, offset,
 852                                                sizeof(*body));
 853         LASSERT(body);
 854
 855         if (body->valid & OBD_MD_FLMTIME &&
 856             body->mtime > LTIME_S(inode->i_mtime)) {
 857                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to "LPU64"\n",
 858                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
 859                 LTIME_S(inode->i_mtime) = body->mtime;
 860         }
 861         if (body->valid & OBD_MD_FLCTIME &&
 862             body->ctime > LTIME_S(inode->i_ctime))
 863                 LTIME_S(inode->i_ctime) = body->ctime;
 864 }
 865
 866 static int ll_new_node(struct inode *dir, struct qstr *name,
 867                        const char *tgt, int mode,
 868                        int rdev, struct dentry *dchild)
 869 {
 870         struct ptlrpc_request *request = NULL;
 871         struct inode *inode = NULL;
 872         struct ll_sb_info *sbi = ll_i2sbi(dir);
 873         struct mdc_op_data op_data = { { 0 } };
 874         int tgt_len = 0;
 875         int err;
 876
 877         ENTRY;
 878         if (unlikely(tgt != NULL))
 879                 tgt_len = strlen(tgt)+1;
 880
 881         err = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
 882                                      name->len, 0, NULL);
 883         if (err)
 884                 GOTO(err_exit, err);
 885
 886         err = mdc_create(sbi->ll_mdc_exp, &op_data, tgt, tgt_len,
 887                          mode, cfs_curproc_fsuid(), cfs_curproc_fsgid(),
 888                          cfs_curproc_cap_pack(), rdev, &request);
 889         if (err)
 890                 GOTO(err_exit, err);
 891
 892         ll_update_times(request, REPLY_REC_OFF, dir);
 893
 894         if (dchild) {
 895                 err = ll_prep_inode(sbi->ll_osc_exp, &inode, request,
 896                                     REPLY_REC_OFF, dchild->d_sb);
 897                 if (err)
 898                      GOTO(err_exit, err);
 899
 900                 d_drop(dchild);
 901                 d_instantiate(dchild, inode);
 902                 EXIT;
 903         }
 904 err_exit:
 905         ptlrpc_req_finished(request);
 906
 907         return err;
 908 }
 909
 910
 911 static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
 912                             unsigned rdev, struct dentry *dchild)
 913 {
 914         int err;
 915         ENTRY;
 916
 917         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p) mode %o dev %x\n",
 918                name->len, name->name, dir->i_ino, dir->i_generation, dir,
 919                mode, rdev);
 920
 921         mode &= ~current->fs->umask;
 922
 923         switch (mode & S_IFMT) {
 924         case 0:
 925                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
 926         case S_IFREG:
 927         case S_IFCHR:
 928         case S_IFBLK:
 929         case S_IFIFO:
 930         case S_IFSOCK:
 931                 err = ll_new_node(dir, name, NULL, mode, rdev, dchild);
 932                 break;
 933         case S_IFDIR:
 934                 err = -EPERM;
 935                 break;
 936         default:
 937                 err = -EINVAL;
 938         }
 939         RETURN(err);
 940 }
 941
 942 #ifndef HAVE_VFS_INTENT_PATCHES
 943 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 944 {
 945         struct lookup_intent *it = ll_d2d(dentry)->lld_it;
 946         int rc;
 947
 948         if (!it)
 949                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 950
 951         ll_d2d(dentry)->lld_it = NULL;
 952
 953         /* Was there an error? Propagate it! */
 954         if (it->d.lustre.it_status) {
 955                 rc = it->d.lustre.it_status;
 956                 goto out;
 957         }
 958
 959         rc = ll_create_it(dir, dentry, mode, it);
 960 #ifdef HAVE_FILE_IN_STRUCT_INTENT
 961         if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
 962                 nd->intent.open.file->private_data = it;
 963                 lookup_instantiate_filp(nd, dentry, NULL);
 964         }
 965 #else
 966         ll_release_openhandle(dentry,it);
 967 #endif
 968
 969 out:
 970         ll_intent_release(it);
 971         OBD_FREE(it, sizeof(*it));
 972
 973         return rc;
 974 }
 975 #else
 976 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
 977 {
 978
 979         if (!nd || !nd->intent.d.lustre.it_disposition)
 980                 /* No saved request? Just mknod the file */
 981                 return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
 982
 983         return ll_create_it(dir, dentry, mode, &nd->intent);
 984 }
 985 #endif
 986
 987 static int ll_symlink_generic(struct inode *dir, struct qstr *name,
 988                               const char *tgt, struct dentry *dchild)
 989 {
 990         int err;
 991         ENTRY;
 992
 993         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p),target=%.*s\n",
 994                name->len, name->name, dir->i_ino, dir->i_generation,
 995                dir, 3000, tgt);
 996
 997         err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
 998                           0, dchild);
 999         RETURN(err);
1000 }
1001
1002 static int ll_link_generic(struct inode *src,  struct inode *dir,
1003                            struct qstr *name, struct dentry *dchild)
1004 {
1005         struct ptlrpc_request *request = NULL;
1006         struct mdc_op_data op_data = { { 0 } };
1007         int err;
1008         struct ll_sb_info *sbi = ll_i2sbi(dir);
1009
1010         ENTRY;
1011         CDEBUG(D_VFSTRACE,
1012                "VFS Op: inode=%lu/%u(%p), dir=%lu/%u(%p), target=%.*s\n",
1013                src->i_ino, src->i_generation, src, dir->i_ino,
1014                dir->i_generation, dir, name->len, name->name);
1015
1016         err = ll_prepare_mdc_op_data(&op_data, src, dir, name->name,
1017                                      name->len, 0, NULL);
1018         if (err)
1019                 GOTO(out, err);
1020         err = mdc_link(sbi->ll_mdc_exp, &op_data, &request);
1021         if (err)
1022                GOTO(out, err);
1023
1024         if (dchild) {
1025                 d_drop(dchild);
1026         }
1027         ll_update_times(request, REPLY_REC_OFF, dir);
1028
1029         EXIT;
1030 out:
1031         ptlrpc_req_finished(request);
1032         RETURN(err);
1033 }
1034
1035 static int ll_mkdir_generic(struct inode *dir, struct qstr *name, int mode,
1036                             struct dentry *dchild)
1037
1038 {
1039         int err;
1040
1041         ENTRY;
1042         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1043                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1044
1045         mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
1046         err = ll_new_node(dir, name, NULL, mode, 0, dchild);
1047
1048         RETURN(err);
1049 }
1050
1051 /* Try to find the child dentry by its name.
1052    If found, put the result fid into @fid. */
1053 static void ll_get_child_fid(struct inode * dir, struct qstr *name,
1054                              struct ll_fid *fid)
1055 {
1056         struct dentry *parent, *child;
1057
1058         parent = list_entry(dir->i_dentry.next, struct dentry, d_alias);
1059         child = d_lookup(parent, name);
1060         if (child) {
1061                 if (child->d_inode)
1062                         ll_inode2fid(fid, child->d_inode);
1063                 dput(child);
1064         }
1065 }
1066
1067 static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
1068                             struct qstr *name)
1069 {
1070         struct ptlrpc_request *request = NULL;
1071         struct mdc_op_data op_data = { { 0 } };
1072         struct dentry *dentry;
1073         int rc;
1074         ENTRY;
1075         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1076                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1077
1078         /* Check if we have something mounted at the dir we are going to delete
1079          * In such a case there would always be dentry present. */
1080         if (dparent) {
1081                 dentry = d_lookup(dparent, name);
1082                 if (dentry) {
1083                         int mounted = d_mountpoint(dentry);
1084                         dput(dentry);
1085                         if (mounted)
1086                                 GOTO(out, rc = -EBUSY);
1087                 }
1088         }
1089
1090         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1091                                     name->len, S_IFDIR, NULL);
1092         if (rc)
1093                 GOTO(out, rc);
1094
1095         ll_get_child_fid(dir, name, &op_data.fid3);
1096         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1097         if (rc)
1098                 GOTO(out, rc);
1099         ll_update_times(request, REPLY_REC_OFF, dir);
1100
1101         EXIT;
1102 out:
1103         ptlrpc_req_finished(request);
1104         return(rc);
1105 }
1106
1107 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
1108 {
1109         struct mds_body *body;
1110         struct lov_mds_md *eadata;
1111         struct lov_stripe_md *lsm = NULL;
1112         struct obd_trans_info oti = { 0 };
1113         struct obdo *oa;
1114         int rc;
1115         ENTRY;
1116
1117         /* req is swabbed so this is safe */
1118         body = lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF, sizeof(*body));
1119
1120         if (!(body->valid & OBD_MD_FLEASIZE))
1121                 RETURN(0);
1122
1123         if (body->eadatasize == 0) {
1124                 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
1125                 GOTO(out, rc = -EPROTO);
1126         }
1127
1128         /* The MDS sent back the EA because we unlinked the last reference
1129          * to this file. Use this EA to unlink the objects on the OST.
1130          * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
1131          * check it is complete and sensible. */
1132         eadata = lustre_swab_repbuf(request, REPLY_REC_OFF + 1,
1133                                     body->eadatasize, NULL);
1134         LASSERT(eadata != NULL);
1135         if (eadata == NULL) {
1136                 CERROR("Can't unpack MDS EA data\n");
1137                 GOTO(out, rc = -EPROTO);
1138         }
1139
1140         rc = obd_unpackmd(ll_i2obdexp(dir), &lsm, eadata, body->eadatasize);
1141         if (rc < 0) {
1142                 CERROR("obd_unpackmd: %d\n", rc);
1143                 GOTO(out, rc);
1144         }
1145         LASSERT(rc >= sizeof(*lsm));
1146
1147         rc = obd_checkmd(ll_i2obdexp(dir), ll_i2mdcexp(dir), lsm);
1148         if (rc)
1149                 GOTO(out_free_memmd, rc);
1150
1151         OBDO_ALLOC(oa);
1152         if (oa == NULL)
1153                 GOTO(out_free_memmd, rc = -ENOMEM);
1154
1155         oa->o_id = lsm->lsm_object_id;
1156         oa->o_gr = lsm->lsm_object_gr;
1157         oa->o_mode = body->mode & S_IFMT;
1158         oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLTYPE;
1159
1160         if (body->valid & OBD_MD_FLCOOKIE) {
1161                 oa->o_valid |= OBD_MD_FLCOOKIE;
1162                 oti.oti_logcookies =
1163                         lustre_msg_buf(request->rq_repmsg, REPLY_REC_OFF + 2,
1164                                        sizeof(struct llog_cookie) *
1165                                        lsm->lsm_stripe_count);
1166                 if (oti.oti_logcookies == NULL) {
1167                         oa->o_valid &= ~OBD_MD_FLCOOKIE;
1168                         body->valid &= ~OBD_MD_FLCOOKIE;
1169                 }
1170         }
1171
1172         rc = obd_destroy(ll_i2obdexp(dir), oa, lsm, &oti, ll_i2mdcexp(dir));
1173         OBDO_FREE(oa);
1174         if (rc)
1175                 CERROR("obd destroy objid "LPX64"@"LPX64" error %d\n",
1176                        lsm->lsm_object_id, lsm->lsm_object_gr, rc);
1177  out_free_memmd:
1178         obd_free_memmd(ll_i2obdexp(dir), &lsm);
1179  out:
1180         return rc;
1181 }
1182
1183 /* ll_unlink_generic() doesn't update the inode with the new link count.
1184  * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
1185  * is any lock existing. They will recycle dentries and inodes based upon locks
1186  * too. b=20433 */
1187 static int ll_unlink_generic(struct inode * dir, struct qstr *name)
1188 {
1189         struct ptlrpc_request *request = NULL;
1190         struct mdc_op_data op_data = { { 0 } };
1191         int rc;
1192         ENTRY;
1193
1194         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%lu/%u(%p)\n",
1195                name->len, name->name, dir->i_ino, dir->i_generation, dir);
1196
1197         rc = ll_prepare_mdc_op_data(&op_data, dir, NULL, name->name,
1198                                     name->len, 0, NULL);
1199         if (rc)
1200                 GOTO(out, rc);
1201
1202         ll_get_child_fid(dir, name, &op_data.fid3);
1203         rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
1204         if (rc)
1205                 GOTO(out, rc);
1206
1207         ll_update_times(request, REPLY_REC_OFF, dir);
1208
1209         rc = ll_objects_destroy(request, dir);
1210         if (rc)
1211                 GOTO(out, rc);
1212         EXIT;
1213  out:
1214         ptlrpc_req_finished(request);
1215         return(rc);
1216 }
1217
1218 static int ll_rename_generic(struct inode *src, struct qstr *src_name,
1219                              struct inode *tgt, struct qstr *tgt_name)
1220 {
1221         struct ptlrpc_request *request = NULL;
1222         struct ll_sb_info *sbi = ll_i2sbi(src);
1223         struct mdc_op_data op_data = { { 0 } };
1224         int err;
1225
1226         ENTRY;
1227         CDEBUG(D_VFSTRACE,"VFS Op:oldname=%.*s,src_dir=%lu/%u(%p),newname=%.*s,"
1228                "tgt_dir=%lu/%u(%p)\n", src_name->len, src_name->name,
1229                src->i_ino, src->i_generation, src, tgt_name->len,
1230                tgt_name->name, tgt->i_ino, tgt->i_generation, tgt);
1231
1232         err = ll_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0, NULL);
1233         if (err)
1234                 GOTO(out, err);
1235
1236         ll_get_child_fid(src, src_name, &op_data.fid3);
1237         ll_get_child_fid(tgt, tgt_name, &op_data.fid4);
1238         err = mdc_rename(sbi->ll_mdc_exp, &op_data,
1239                          src_name->name, src_name->len,
1240                          tgt_name->name, tgt_name->len, &request);
1241         if (err)
1242                 GOTO(out, err);
1243         ll_update_times(request, REPLY_REC_OFF, src);
1244         ll_update_times(request, REPLY_REC_OFF, tgt);
1245         err = ll_objects_destroy(request, src);
1246         if (err)
1247                 GOTO(out, err);
1248
1249         EXIT;
1250 out:
1251         ptlrpc_req_finished(request);
1252
1253         return(err);
1254 }
1255
1256 #ifdef HAVE_VFS_INTENT_PATCHES
1257 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
1258 {
1259         return ll_mknod_generic(nd->dentry->d_inode, &nd->last, mode,rdev,NULL);
1260 }
1261 static int ll_rename_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1262 {
1263         return ll_rename_generic(srcnd->dentry->d_inode, &srcnd->last,
1264                                  tgtnd->dentry->d_inode, &tgtnd->last);
1265 }
1266 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
1267 {
1268         return ll_link_generic(srcnd->dentry->d_inode, tgtnd->dentry->d_inode,
1269                                &tgtnd->last, NULL);
1270 }
1271 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
1272 {
1273         return ll_symlink_generic(nd->dentry->d_inode, &nd->last, tgt, NULL);
1274 }
1275 static int ll_rmdir_raw(struct nameidata *nd)
1276 {
1277         return ll_rmdir_generic(nd->dentry->d_inode, nd->dentry, &nd->last);
1278 }
1279 static int ll_mkdir_raw(struct nameidata *nd, int mode)
1280 {
1281         return ll_mkdir_generic(nd->dentry->d_inode, &nd->last, mode, NULL);
1282 }
1283 static int ll_unlink_raw(struct nameidata *nd)
1284 {
1285         return ll_unlink_generic(nd->dentry->d_inode, &nd->last);
1286 }
1287 #endif
1288
1289 static int ll_mknod(struct inode *dir, struct dentry *dchild, int mode,
1290                     ll_dev_t rdev)
1291 {
1292         return ll_mknod_generic(dir, &dchild->d_name, mode,
1293                                 old_encode_dev(rdev), dchild);
1294 }
1295
1296 static int ll_unlink(struct inode * dir, struct dentry *dentry)
1297 {
1298         return ll_unlink_generic(dir, &dentry->d_name);
1299 }
1300 static int ll_mkdir(struct inode *dir, struct dentry *dentry, int mode)
1301 {
1302         return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
1303 }
1304 static int ll_rmdir(struct inode *dir, struct dentry *dentry)
1305 {
1306         return ll_rmdir_generic(dir, NULL, &dentry->d_name);
1307 }
1308 static int ll_symlink(struct inode *dir, struct dentry *dentry,
1309                       const char *oldname)
1310 {
1311         return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
1312 }
1313 static int ll_link(struct dentry *old_dentry, struct inode *dir,
1314                    struct dentry *new_dentry)
1315 {
1316         return ll_link_generic(old_dentry->d_inode, dir,
1317                                &new_dentry->d_name, new_dentry);
1318 }
1319 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
1320                      struct inode *new_dir, struct dentry *new_dentry)
1321 {
1322         int err;
1323         err = ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
1324                                 &new_dentry->d_name);
1325         if (!err) {
1326 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
1327                 if (!S_ISDIR(old_dentry->d_inode->i_mode))
1328 #endif
1329                         d_move(old_dentry, new_dentry);
1330         }
1331         return err;
1332 }
1333
1334 struct inode_operations ll_dir_inode_operations = {
1335 #ifdef HAVE_VFS_INTENT_PATCHES
1336         .link_raw           = ll_link_raw,
1337         .unlink_raw         = ll_unlink_raw,
1338         .symlink_raw        = ll_symlink_raw,
1339         .mkdir_raw          = ll_mkdir_raw,
1340         .rmdir_raw          = ll_rmdir_raw,
1341         .mknod_raw          = ll_mknod_raw,
1342         .rename_raw         = ll_rename_raw,
1343         .setattr            = ll_setattr,
1344         .setattr_raw        = ll_setattr_raw,
1345 #endif
1346         .mknod              = ll_mknod,
1347         .lookup             = ll_lookup_nd,
1348         .create             = ll_create_nd,
1349         /* We need all these non-raw things for NFSD, to not patch it. */
1350         .unlink             = ll_unlink,
1351         .mkdir              = ll_mkdir,
1352         .rmdir              = ll_rmdir,
1353         .symlink            = ll_symlink,
1354         .link               = ll_link,
1355         .rename             = ll_rename,
1356         .setattr            = ll_setattr,
1357         .getattr            = ll_getattr,
1358         .permission         = ll_inode_permission,
1359         .setxattr           = ll_setxattr,
1360         .getxattr           = ll_getxattr,
1361         .listxattr          = ll_listxattr,
1362         .removexattr        = ll_removexattr,
1363 };
1364
1365 struct inode_operations ll_special_inode_operations = {
1366 #ifdef HAVE_VFS_INTENT_PATCHES
1367         .setattr_raw    = ll_setattr_raw,
1368 #endif
1369         .setattr        = ll_setattr,
1370         .getattr        = ll_getattr,
1371         .permission     = ll_inode_permission,
1372         .setxattr       = ll_setxattr,
1373         .getxattr       = ll_getxattr,
1374         .listxattr      = ll_listxattr,
1375         .removexattr    = ll_removexattr,
1376 };